Experience effortless acceleration and relieve pedal fatigue with a simple twist of your wrist

can be used as a double-shoulder backpack

It can hold 10 bottles of mineral water

Stay in control with the intuitive LCD display that keeps you informed of your speed

wireless air pump 150psi touch screen key portable electric tire inflator for car bicycle motorcycle mini air compressor injecto front and rear hydraulic brakes Experience effortless acceleration and relieveSPECIFICATIONS "Black": Touch Screen Style "C0019": Key Style Brand Name: Toptrek Choice: yes Hign concerned Chemical: None Origin: Mainland China Type: Electric digital display: Y C0019